DefinePK

Abstract

The utilization of varactor diode is advantageous as it offers the beam scanning capability as required for reflectarray antenna but it often said as the contributor to high losses. A superposition of reflectarray elements controlled by varactor diode is evaluated with dynamic phase range enhanced and loss improved at Ku-band for a successful design of an antenna element in the array environments. Simulated results of reflectarray element under normal incidence of two designs with capacitive variation integrated represents the use of varactor is executed by CST Microwave Studio. In capacitance range of 0.08p to 1.0pF, a dynamic phase range of 3230 demonstrates at 13.964 GHz and 14.828 GHz with reflection loss 1.66 dB and 0.99 dB respectively as a result of superposition.